discouragement vs instigation

discouragement

noun
  • The act of discouraging. 

  • Anything that discourages. 

  • The loss of confidence or enthusiasm. 

instigation

noun
  • The act of instigating, or the state of being instigated; incitement; especially to evil or wickedness. 

How often have the words discouragement and instigation occurred in a corpus of books? (source: Google Ngram Viewer )